CN210539654U

CN210539654U - Motor for lifting table

Info

Publication number: CN210539654U
Application number: CN201921251837.8U
Authority: CN
Inventors: 汪斌; 沈杰; 王英杰; 黄晓荣
Original assignee: Zhejiang Meiyin Motor Co ltd
Current assignee: Zhejiang Meiyin Motor Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-05-19
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a lifting table motor, which comprises a direct current motor (10), wherein the direct current motor (10) is connected with a reduction gearbox, the reduction gearbox comprises a box frame (20), the box frame (20) is fixed on the end face where an output shaft of the direct current motor (10) is located, a transfer turbine (21) matched with the output shaft is arranged on the box frame (20), the transfer turbine (21) is provided with an axial sinking groove (22), fixture blocks (23) are annularly distributed on the inner wall of the sinking groove (22), cushion pads (24) are respectively arranged on two circumferential side faces of the fixture blocks (23), and the cushion pads on one side of a tabletop lifted upwards by the fixture blocks are larger in thickness; the output shaft is provided with an annunciator (11), the box frame (20) is provided with an installation sliding groove (25) of a detection plate of the annunciator (11), and a bulge (26) is arranged in the installation sliding groove (25). The utility model has the characteristics of manufacturing cost is lower, is difficult to produce vibration noise and product stability relatively higher. Furthermore, the utility model discloses production efficiency can also be improved.

Description

Motor for lifting table

Technical Field

The utility model relates to a motor with a reduction box, in particular to a motor of a lifting table.

Background

Standing work is an emerging idea in recent years, and the main point is to enable office people to sit for a long time, so that the disadvantages of obesity, lumbar spondylosis, lowered work efficiency and the like caused by the long-time sitting are reduced. The lifting table for office is followed. The lifting table is generally provided with a screw rod in the table leg, and a lifting table motor is arranged at the end part of the screw rod, so that the length of the table leg is changed through the structure to realize lifting. The existing lifting table motor is generally characterized in that a reduction gearbox, specifically a turbine, is arranged on an output shaft of a direct current motor, the middle part of the turbine is connected with a shaft of a screw rod through a hexagonal hole, and the reduction is realized and the output direction of the motor is changed through the turbine. Obviously, the centerless turbine has a more complex rotating structure, requires high bearing requirements, and has higher production cost of the whole equipment. Meanwhile, the middle of the turbine is connected with the outside in a hole mode, and a buffer structure is difficult to arrange in the structure of the hole shaft. After a period of use, noise and vibration may occur between the worm wheel and the screw due to impact at the time of starting. In addition, the output shaft of the dc motor is generally provided with a signal device for feeding back the rotation speed, the angle, etc., and a detection plate for detecting the signal device is arranged at the reduction box. The existing installation mode of the detection plate is that a sliding groove is arranged on a reduction gearbox, the detection plate is pushed into the sliding groove and finally fixed by glue. During manufacturing, the slot generally has a margin, that is, the detection plate is loose in the slot, and the detection plate is lack of a limiting mechanism, so that the mounting accuracy of the detection plate is low. At the middle and later stages of product life, along with factors such as the signal original paper ageing on the pick-up plate, the installation accuracy will show out lowly, further reduces and detects the precision, and the use of product is experienced and can be descend.

Therefore, the existing motor of the lifting table has the problems of high production cost, easy generation of vibration noise and relatively low product stability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lift table motor. The utility model has the characteristics of manufacturing cost is lower, is difficult to produce vibration noise and product stability relatively higher. Furthermore, the utility model discloses production efficiency can also be improved.

The technical scheme of the utility model: a lifting table motor comprises a direct current motor, the direct current motor is connected with a reduction gearbox, the reduction gearbox comprises a box frame, the box frame is fixed on the end face where an output shaft of the direct current motor is located, a transfer turbine matched with the output shaft is arranged on the box frame, the transfer turbine is provided with an axial sinking groove, clamping blocks are distributed on the inner wall of the sinking groove in an annular mode, buffering cushions are arranged on two circumferential side faces of each clamping block, and the thickness of the buffering cushion on one side of a table top lifted upwards by each clamping block is larger; the output shaft is provided with a annunciator, the box frame is provided with an installation chute of an annunciator detection plate, and a bulge is arranged in the installation chute.

In the lifting table motor, the clamping block is axially hollow.

In the lifting table motor, the cushion pad is connected to the clamping ring, and the clamping ring is sleeved on the rotating shaft of the transfer turbine.

In the motor for the lifting table, the annunciator is a hall magnetic ring.

Compared with the prior art, the utility model discloses a turbine is central axial fixity's structure, and the required part structure of this kind of structure is simpler, requires lowerly, and the cost of production is also relatively lower. And simultaneously, the utility model discloses an external output of structure of heavy groove fixture block, this kind of structure can conveniently set up the blotter, effectively reduces the vibration noise problem that the start-up impact arouses. Moreover, for the motor of the lifting table, the stress of the clamping blocks at the positions of the table top lifted by the screw rod and the table top lowered by the screw rod is different, and the force of the clamping blocks is larger. The utility model discloses set up thicker blotter in view of the above in one side of lifting motor, promote buffering effect on the one hand, on the other hand can effectively avoid two blotter atresss different, and the different production gaps of ageing degree, and then the problem of noise production. From this, in whole product life cycle, the utility model discloses a blotter can all play better damping noise reduction effect.

Furthermore, the utility model discloses be equipped with the arch in the installation spout of pick-up plate, correspond to be equipped with on the pick-up plate and sunken. On the one hand, the structure provides limit, improves the installation precision of the detection plate, and ensures that the detection precision of the detection plate in the whole life cycle is relatively high. On the other hand, when the detection plate is mounted in place, the person feels a clear feedback, which also contributes to an increase in production efficiency.

Furthermore, the hollow clamping block can reduce the problem that bad cooling shrinkage of the thick part in the casting or injection molding process is too large, ensure the yield of products and further ensure the production cost.

Furthermore, the utility model discloses a ring of cushion area ridge portion from this through deformation, the snap ring can directly overlap in the pivot, and the blotter then can directly press from both sides in the fixture block both sides, and it is very convenient to install.

Furthermore, the utility model discloses a rotational speed angle is detected to ripe low-priced hall principle, helps the control cost.

To sum up, the utility model has the characteristics of manufacturing cost is lower, is difficult to produce vibration noise and product stability relatively higher. Furthermore, the utility model discloses production efficiency can also be improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged schematic view at a in fig. 1.

Reference numerals: 10-direct current motor, 11-annunciator, 20-box frame, 21-transfer turbine, 22-sink groove, 23-clamping block, 24-buffer pad, 25-installation sliding groove, 26-protrusion and 27-clamping ring.

Detailed Description

The present invention will be further described with reference to the following examples, which are not intended as a limitation to the present invention.

Example (b): a lifting table motor comprises a direct current motor 10, and the direct current motor 10 is connected with a reduction gearbox. The reduction gearbox comprises a box frame 20, the box frame 20 is fixed on the end face where the output shaft of the direct current motor 10 is located, a transfer turbine 21 matched with the output shaft is arranged on the box frame 20, the transfer turbine 21 is provided with an axial sinking groove 22, and fixture blocks 23 are annularly distributed on the inner wall of the sinking groove 22. As shown in fig. 1, 3 hollow blocks 23 are distributed in the sink 22, the cushion 24 and the snap ring 27 are shown as a circular ring structure with hexagonal protrusions 26, the snap ring 27 is sleeved on the rotating shaft of the relay turbine 21, and the cushion 24 is clamped on two sides of the blocks 23. The cushion pad 24 on the side where the latch 23 is driven upward is thicker, and the cushion pads 24 in the 2 o ' clock direction, the 6 o ' clock direction and the 10 o ' clock direction in fig. 1 are thicker than the cushion pads 24 at the other 3 positions. The end face of the screw rod matched with the transfer turbine 21 is provided with 3 pins, the 3 pins are inserted into a 3-petal fan shape vacated by the cushion pad 24 when the screw rod is installed, and the transfer turbine 21 lifts the table top upwards in the anticlockwise direction shown in the figure.

The output shaft is provided with the annunciator 11, the box frame 20 is provided with an installation sliding groove 25 for detecting the plate of the annunciator 11, and the installation sliding groove 25 is internally provided with a bulge 26. The motor may be a commercially available dc motor 10, and the motor power is determined according to the specific table product, and is generally an 18V motor. The annunciator 11 adopts a Hall magnetic ring, namely simply a magnetic ring with asymmetric protrusions, the signal detection plate is a Hall plate, the Hall plate is the existing mature technology and can be purchased in the market, and different sheets are processed according to different mounting structures.

When in work:

the utility model discloses a turbine is central axial fixity's structure, and the required part structure of this kind of structure is simpler, requires lowerly, and the cost of production is also relatively lower. And simultaneously, the utility model discloses an external output of structure of heavy groove 22 fixture block 23, this kind of structure can conveniently set up blotter 24, effectively reduces the vibration noise problem that the start-up impact arouses. Moreover, for the motor of the lifting table, the stress of the lead screw at the positions for lifting the table top and descending the table top fixture block 23 is different definitely, and the force of the lead screw is larger. The utility model discloses set up thick blotter 24 in view of the above in one side of lifting motor, promote buffering effect on the one hand, on the other hand can effectively avoid two blotters 24 atress different, and the different production gaps of ageing degree, and then the problem of noise production. From this, in whole product life cycle, the utility model discloses a blotter 24 can all play better damping noise reduction effect.

Furthermore, the utility model discloses be equipped with protruding 26 in the installation spout 25 of pick-up plate, correspond to be equipped with on the pick-up plate and cave in. On the one hand, the structure provides limit, improves the installation precision of the detection plate, and ensures that the detection precision of the detection plate in the whole life cycle is relatively high. On the other hand, when the detection plate is mounted in place, the person feels a clear feedback, which also contributes to an increase in production efficiency. The utility model discloses a pick-up plate accessible is supplementary fixed by appropriate glue.

The hollow clamping block 23 can reduce the problem that bad cooling shrinkage of the thick part in the casting or injection molding process is too large, ensure the yield of products and further ensure the production cost.

The utility model discloses a ring of blotter 24 take ridge portion, from this through deformation, snap ring 27 can directly overlap in the pivot, and blotter 24 then can directly press from both sides in 23 both sides of fixture block, and it is very convenient to install.

The utility model discloses a ripe low-price hall principle detects rotational speed angle, helps the control cost.

Claims

1. The utility model provides a lift table motor, includes direct current motor (10), and direct current motor (10) are connected with reducing gear box, its characterized in that: the reduction gearbox comprises a box frame (20), the box frame (20) is fixed on the end face where the output shaft of the direct current motor (10) is located, a transfer turbine (21) matched with the output shaft is arranged on the box frame (20), the transfer turbine (21) is provided with an axial sinking groove (22), clamping blocks (23) are distributed on the inner wall of the sinking groove (22) in a ring shape, buffering cushions (24) are arranged on two circumferential side faces of each clamping block (23), and the thickness of the buffering cushion on one side of the tabletop lifted upwards by each clamping block is larger; the output shaft is provided with an annunciator (11), the box frame (20) is provided with an installation sliding groove (25) of a detection plate of the annunciator (11), and a bulge (26) is arranged in the installation sliding groove (25).

2. A lift table motor as claimed in claim 1 wherein: the fixture block (23) is axially hollow.

3. A lift table motor as claimed in claim 1 wherein: the buffer pad (24) is connected with a clamping ring (27), and the clamping ring (27) is sleeved on a rotating shaft of the transfer turbine (21).

4. A lift table motor as claimed in claim 1 wherein: the annunciator (11) is a Hall magnetic ring.